roof recycling. In 2011, the award was renamed the Roof Point Excellence in Design Award. The Center named Nation's Roof, Lithia Springs, Georgia, the overall winner of its Excellence in Design Award competition during the International Roofing Expo 2009. The best vegetated roof was awarded to the William J. Clinton Presidential Library, built by Tremco, Inc. The best solar roof was awarded to the Fresh & Easy Warehouse in Riverside, California, built by Sika Sarnafil. The best roof recycling was awarded to Duke University Hospital. See also Environmental and Energy Study Institute Energy conservation Sustainability References Business organizations based in the United States Environmental organizations based in Washington, D.C. Roofs